<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" %>

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <script>
        function loadXMLDoc() {
            var xmlhttp;
            if (window.XMLHttpRequest) {
                //  IE7+, Firefox, Chrome, Opera, Safari 浏览器执行代码
                xmlhttp = new XMLHttpRequest();
            }
            else {
                // IE6, IE5 浏览器执行代码
                xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
            }
            xmlhttp.onreadystatechange = function () {
                if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
                    document.getElementById("myDiv").innerHTML = xmlhttp.responseText;
                }
            }
            xmlhttp.open("GET", "hello/ajax", true);
            xmlhttp.send();
        }
    </script>
</head>
<body>

<h2>
    <div id="myDiv">使用 AJAX 修改该文本内容</div>
</h2>
<button type="button" onclick="loadXMLDoc()">修改内容</button>
<h2>Hi dhsg . 现在时间是 ${now}</h2>

</body>
</html>